From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: virtio-dev-return-6422-cohuck=redhat.com@lists.oasis-open.org Sender: List-Post: List-Help: List-Unsubscribe: List-Subscribe: Received: from lists.oasis-open.org (oasis-open.org [10.110.1.242]) by lists.oasis-open.org (Postfix) with ESMTP id 0B1EF985ECB for ; Thu, 28 Nov 2019 11:42:52 +0000 (UTC) From: Gerd Hoffmann Date: Thu, 28 Nov 2019 12:42:43 +0100 Message-Id: <20191128114243.23511-1-kraxel@redhat.com> Subject: [virtio-dev] [PATCH] virtio-gpu: some edid clarifications Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable To: virtio-dev@lists.oasis-open.org Cc: Gerd Hoffmann List-ID: Add some notes about fetching the EDID information. Signed-off-by: Gerd Hoffmann --- virtio-gpu.tex | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/virtio-gpu.tex b/virtio-gpu.tex index af4ca610d235..15dbf9f2ec82 100644 --- a/virtio-gpu.tex +++ b/virtio-gpu.tex @@ -70,16 +70,21 @@ \subsubsection{Events} \begin{description} \item[VIRTIO_GPU_EVENT_DISPLAY] Display configuration has changed. The driver SHOULD use the VIRTIO_GPU_CMD_GET_DISPLAY_INFO command to - fetch the information from the device. + fetch the information from the device. In case EDID support is + negotiated (VIRTIO_GPU_F_EDID feature flag) the device SHOULD also + fetch the updated EDID blobs using the VIRTIO_GPU_CMD_GET_EDID + command. \end{description} =20 \devicenormative{\subsection}{Device Initialization}{Device Types / GPU De= vice / Device Initialization} =20 The driver SHOULD query the display information from the device using the VIRTIO_GPU_CMD_GET_DISPLAY_INFO command and use that information -for the initial scanout setup. In case no information is available or -all displays are disabled the driver MAY choose to use a fallback, -such as 1024x768 at display 0. +for the initial scanout setup. In case EDID support is negotiated +(VIRTIO_GPU_F_EDID feature flag) the device SHOULD also fetch the EDID +information using the VIRTIO_GPU_CMD_GET_EDID command. If no +information is available or all displays are disabled the driver MAY +choose to use a fallback, such as 1024x768 at display 0. =20 \subsection{Device Operation}\label{sec:Device Types / GPU Device / Device= Operation} =20 --=20 2.18.1 --------------------------------------------------------------------- To unsubscribe, e-mail: virtio-dev-unsubscribe@lists.oasis-open.org For additional commands, e-mail: virtio-dev-help@lists.oasis-open.org